19-Fluorine nuclear magnetic resonance chemical shift variability in trifluoroacetyl species
نویسندگان
چکیده
منابع مشابه
Fluorotyrosine alkaline phosphatase from Escherichia coli: preparation, properties, and fluorine-19 nuclear magnetic resonance spectrum.
Alkaline phosphatase (EC 3.1.3.1) containing m-flurotyrosine has been prepared from E. coli grown in the presence of m-flurotyrosine. The kinetic properties of the m-fluorotyrosine enzyme measured with p-nitrophenylphosphate at pH 8.0 and dinitrophenylphosphate at pH 5.5 are essentially the same as those of normal alkaline phosphatase. However, the ability of the m-fluorotyrosine protein to ref...
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We report the 470-MHz (11.7 T) 19F solution nuclear magnetic resonance (NMR) spectra of 2-, 3-, and 4-fluorophenylalanine incorporated into the egg white lysozymes (EC 3.2.1.17) of chicken, pheasant, and duck, as well as spectra of 4-fluorotryptophan incorporated into chicken, California valley quail, and Bob White quail and 5- and 6-fluorotryptophan-labeled chicken lysozyme. The 19F solution N...
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PURPOSE To implement and characterize a fluorine-19 ((19)F) magnetic resonance imaging (MRI) technique and to test the hypothesis that the (19)F MRI signal in steady state after intravenous injection of a perfluoro-15-crown-5 ether (PCE) emulsion may be exploited for angiography in a pre-clinical in vivo animal study. MATERIALS AND METHODS In vitro at 9.4T, the detection limit of the PCE emul...
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Introduction: The intrinsically high sensitivity of Magnetic Resonance Spectroscopy (MRS) causes considerable variability in metabolite quantifi cation. In this study, we evaluated the variability of MRS in two research centers using the same model of magnetic resonance image scanner. Methods: Two metabolic phantoms were created to simulate magnetic resonance spectra from in vivo hippocampus. T...
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ژورنال
عنوان ژورنال: Reports in Organic Chemistry
سال: 2013
ISSN: 2230-5246
DOI: 10.2147/roc.s38495